Coupling member for plumbing connections.



l. H. GLAUBER, DECD. we cmzzNs sfu/ms a TRUST COMPANY. Execuox. COUPLINGMEMBER FOR PLUMBING CONNECTIONS.

` 4 APPLICTION FILED MAR. 0, 19H. Llm Patented Apr. 20, 1915.

* a ATTEST INVENTQR W' M l by MMw/AATTW 1HE MORRIS PETE?c CG.4 PHnrC 10WASHINUYON,

JOSEPH H. GLAUBER, OF CLEVELAND, OHIO; THE CTZENS SAVINGS c TRUSTCOMPANY EXECUTOR OP SAID GLAUBER, DECEASED.

COUPLING MEMBER FOR PLlIlTIl/fl-IIVGL CONNECTIONS.

Application filed March 10, 1911.

T0 all whom t mm/ concern:

Be it known that I, JOSEPH H. GLAUBER, citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Coupling Members forPlumbing Connections, of which the following is a speciiication.

My invention relates to improvements in coupling members for plumbingconnections, and the improvement comprises a tubular member having aseparate hollow head affixed thereto, substantially as hereinafter shownand described and more particularly pointed out in the claims.

In general, my object is to give to the trade and the public a couplingmember having a yieldable or contractible head of metal adapted to makea safe and eficient Huid-tight connection,-safe in that splitting andrupture of the coupling parts is guarded against, and eflicient in thata metal to metal sealing union is obtained to stand a high-pressure testwith iuids of all kinds and characters.

Specifically speaking, my object also is to provide a coupling memberconstructed simply of two metal parts united together to constitute asingle article of manufacture and sale, and embodying certain inherentor constructive features which contribute to make one partthehead-yieldable to eX- ternal pressures, and the other part-the body-ableto withstand high internal pressures.

In the accompanying drawings, Figure 1 is a part side elevation and partsectional view of a bath-cock shank and one form of my improved couplingmembers connected therewith; whereas Figs. 2 to 7, inclusive, areseparate sectional views of various modiications of my improved couplingmember, particularly the head end thereof.

In Fig. l, tube 2 represents a common form of bath-cock shank made ofcast metal. As a rule this shank extends through opening 3 in wall t ofa bath tub upon which it is rigidly fastened by screw-Hange 5 andscrew-collar 6. A nut 7 rotatably engaged with flange 8 of shank 2serves to attach a bath-cock thereto, and a screw nut 12 at the otherend of the shank provides means to forcibly seat hollow head A ofcoupling member B within tapering seat 9 of the Specification of LettersPatent.

Patented Apr. 20v, MM5. serial No. 613,611.

shank-end. Coupling member B separate hollow head A of cone-shape unitedwith tubular body 10 which may be either straight or bent into differentangular forms and have different lengths to suit different needs, itbeing understood that coupling member B is attached at one end to theservice or supply pipe in any of the ways now known and followed. Head Aand body l0 may be both made of annealed drawn tubing to give a definitemeasure of yield and contractibility in the head, and to permit handbending of the body, and both parts may be of the same thickness orgage. However in view of different requirements head A and body l0 maybe annealed differently to make the head more pliable than the body, andfor the same reason head A may be made of lighter stock or gage than thebody, or different metals may be usedmaking head A of cast metal, or asoft brass, drawn brass, or an alloy, and body 10 of a harder metal suchas iron, or hard cast brass. As my object is to provide a hollowcone-head particularly constructed to yield without rupture when drawnto its seat, the thickness and inherent characteristics of the materialused must be carefully predetermined in the manufacture in order toobtain that result, and this is also true of body l0 which mustwithstand predetermined internal pressures of a different kind anddegree, particularly between its ends where no reinforcement orencircling backing is provided. The detailed form of the head and itsmanner of attachment to body 10 also enters into the foregoingcalculations. Uniting of a separate head with body 10 may beaccomplished in one of several ways, as by electric-welding, soldering,shrinking, brazing, or a screwconnection,-election being dependent moreor less upon the metals employed. A two-part coupling member B alsonaturally suggests different constructive details, in view of thedifferent matel rials and peculiar requirements involved. Thus,referring to Fig. l, separate conicocylindrical head A shown therein issleeved upon the short leg of right-angled tubular body l0, said headbeing made of lighter stock than body l0 and formed with a shoulder 1land a straight neck 13 at right angles to one another, and eithersoldered or brazed to body l0 to become a unitary or comprises whenproper soldering or fixed part thereof. An annular bead 14 is shown inbody 10 at the frontof shoulder 11 to prevent pulling ofll of the headunder end stress, although this bead maybe omitted brazing steps havebeen taken. Furthermore, this head is stationed back from end 15, theextension thus formed being of service in guiding and centering the headwhen introduced into shank 2, and it will also be noted that an annularspace 16 is provided about body 10 within head A, thereby allowing ampleroom for Ycontraction of said head at its tapered portion when theexigency demands. IIead A being made of lighter metal than body 10 it isobviously more self-adaptable to different seating conditions, andmoreover, thicker body 10 affords an excellent-backing to localizeyielding and sealing effects in the head. The walls of head A mustnevertheless be thick enough to offer sufficient body resistance toprevent rupture or collapse when coupling nut 12 is excessivelytightened, and therefore, very light and thin metal for head A is notentirely practicable, unless reinforced, nor is it desirable to usemetal apt to split and not tough and tenacious.

Fig. 2 shows a hollow head A of the same form as in Fig. 1; but body 10is constructed differently in that bead 14 is omitted and extension 15dispensed With, and in that the extreme end of the body is bentoutwardly to form an annular abutment 17 for the truncated end of conehead A.

In Fig. 3 hollow head A2 is corrugated internally and externally, and isprovided with a reduced integral neck 18 brazed or otherwise permanentlyfixed within the end of body 10. The outer end 19 of this head projectsforwardly a slight distance on straight lines to provide an integralextension, the equivalent of extension 15 in Fig. 1. A tapered headcorrugated annularly as shown will provide a multiple of concentricseating'surfaces, and will yield more readily on an axial line thandiametrically, an advantage in effecting sealing relations with seats ofdi'li'erent taper.

In Fig. 4f, head A3 has an inturned flange 20 sleeved and fixed uponbody 10, and this flange projects into the hollow head to a pointcentrally of the tapering wall, making avery compact arrangement andproviding an internal reinforcement annularly for said wall, although anannular space 16 is also embodied therein as in Fig. 1.

In Fig. 5, head-A4V has a neck 21 sleeved over body 10 and afiixedthereto by threaded engagement; but this head also differs from theothers described in that it is provided with a short straight inturnedflange 22 at its front end which is substantially of the same diameteras abut against the end edge 23 thereof, thereby body 10 and adapted tobacking up the head against end pressures. In addition to the threadedattachment between the parts, solder may also be used to eect afluid-tight union.

In Fig. 6, tubular body 10 has an enlargement 2A terminating in aright-angled flange 25, and head A5 in this instance comprises conicalportion 26 abutting against flange 25 and having an inturned tubularportion 27 of greater length extending into enlargement 24C and againstshoulder 28 in body 10. Permanent union may be made by soldering theparts together. Head A5 in this form is hollow also; but diers from theothers in that the coupling nut 12 engages flange 25 when drawingcoupling member B into seating relation with shank 2, thereby permittingthis type of head to be constructed of relatively light material. Inother forms the pull is directly against shoulder 11 of each head; butnotwithstanding this fact there is no special pulling strain imposedupon the soldered or brazed connection wherever the head and the bodyare united,-coxnpression being taken up by the head alone and body 10being free to follow any forward movement of the head. In Fig. 7, a headA6 is shown wherein the tapering wall 30 is reduced in thickness ascompared with neck 31 and shoulder 32.

Now, briefly enumerating the advantages of my improved coupling member,a twopart all-metal coupling member-united and embodying the featuresdescribed-is both durable and strong, being particularly constructed inits respective parts to meet different requirements, internally andexternally. The hollow conical head furnishes a pliable and yieldableseat and a metal one as well, giving a wide range of utility to saidarticle; and when used with cast shanks, splitting of the shank end willnot occur; nor will the threads on the shank or in the coupling nutstrip when the said nut is tightened; nor will the head itself split orrupture and cause leakage. In fact, tests of the most severe charactershow that nut 12 will be the first to give, and obviously, this is ofdecided advantage as said nut is the most inexpensive and simplest partto replace. Furthermore, a hollow head of tough, tenacious and pliablemetal will accommodate itself to any irregularities, variations intaper, and roughness in the seat of a cast shank-end, and therefore makea perfectly secure and efficient fluid-tight connection adapted towithstand high pressures of large upon and united with said end, anannular Wall projected at YYright angles from said neck to provide aflat bearing surface for a coupling nut, and a conical extension ofuniform thickness converging from said wall at a relatively acute angleto the axis of said pipe with an annular space between said extensionand the pipe to permit said eXtension to be compressed to a smallerdiameter intermediate the ends thereof.

2. A single article of manufacture and sale comprising a tubularcoupling member having an annular enlargement and a separate sheet-metalshell fixed to said member in thrust engaging relations with saidenlargement, said sheet-metal shell comprising a short neck sleeved uponthe pipe, an annular Wall projected outwardly from said neck to providea flat bearing surface for a coupling nut, and a conical extensionconverging forwardly on straight lines from said wall into Contact withsaid pipe with C'opies of this patent may be obtained for ve cents each,by addressing the an annular space between said extension and the pipe.

3. A plumbing connection, comprising a tubular member having a straightend provided With an annular expanded enlargement, in combination with ashell sleeved upon said straight end in abutting relations with saidenlargement, said shell being made of pliant metal and expanded toprovide a right-angled shoulder and an annular converging portion ofsubstantially uniformy thickness extending on` straight lines from saidshoulder at an acute angle to said straight end and to a smallerdiameter of relatively the same diameter as said tubular member.

In testimony whereof I ailix my signature in presence of two Witnesses.

JOSEPH H. GLAUBER.

Witnesses:

R. B. MOSER, F. C. MUssUN.

Commissioner of Patents,

Washington, D. C.

